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The behaviour of phosphorus in the flue gas during the combustion of high-phosphate fuels

机译：高磷酸盐燃料燃烧过程中烟气中磷的行为

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Cost effectiveness forces operators of coal fired power plants to switch to more economic fuels. This generated a trend in Germany to co-combust secondary waste fuels as an alternative to incineration. The co-combustion of sewage sludge became quite common. Additionally, the combustion of animal residues has been practiced. These fuels, however, are reported to cause operational problems such as increased slagging and damage on the adjacent SCR catalysts. As main reason, the high phosphorus content of these fuels has been identified. These observations were in good agreement with problems reported during the combustion of some PRB coals, which are similar in terms of phosphorus content and compounds. In order to obtain information on the release and the condensation of phosphorus in the boiler, bench scale combustion tests and full-scale measurements were carried out with the focus on the behaviour of phosphorus in the flue gas duct after the boiler. The results gave information on the gas-phase concentration as well as on the concentration of particle bound phosphorus.
机译：成本效益迫使燃煤电厂的经营者转向使用更经济的燃料。这在德国引起了共燃烧二次废物燃料以替代焚烧的趋势。污泥的燃烧很普遍。另外，已经进行了动物残渣的燃烧。然而，据报道，这些燃料引起操作问题，例如增加的结渣和对相邻的SCR催化剂的损坏。主要原因是，这些燃料中的磷含量很高。这些观察结果与某些PRB煤燃烧过程中报告的问题非常吻合，这些问题在磷含量和化合物方面相似。为了获得有关锅炉中磷的释放和冷凝的信息，进行了台式燃烧试验和满量程测量，重点是锅炉后烟道中磷的行为。结果提供了有关气相浓度以及颗粒结合的磷浓度的信息。

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